305005049 has 4 divisors (see below), whose sum is σ = 305040036. Its totient is φ = 304970064.

The previous prime is 305005033. The next prime is 305005067. The reversal of 305005049 is 940500503.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 52417600 + 252587449 = 7240^2 + 15893^2 .

It is a cyclic number.

It is not a de Polignac number, because 305005049 - 2⁴ = 305005033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305005009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7247 + ... + 25739.

It is an arithmetic number, because the mean of its divisors is an integer number (76260009).

Almost surely, 2^305005049 is an apocalyptic number.

It is an amenable number.

305005049 is a deficient number, since it is larger than the sum of its proper divisors (34987).

305005049 is a wasteful number, since it uses less digits than its factorization.

305005049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34986.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 305005049 is about 17464.3937484242. The cubic root of 305005049 is about 673.1352640680.

The spelling of 305005049 in words is "three hundred five million, five thousand, forty-nine".